Ford Villager Owner's Manual page 234

Load Calculation — Trailers
The trailer towing table shows the maximum allowable trailer
weight and maximum GCWR for vehicles with and without the
trailer towing package.
For a particular vehicle, the allowable trailer weight may be
lower depending upon the vehicle's actual gross vehicle weight.
(GVW is the weight of the vehicle including passengers,
equipment, cargo.)
You must determine the appropriate trailer weight for your
vehicle at its particular GVW while adhering to GVWR, GAWR,
GCWR and maximum trailer weight ratings.
Fill the fuel tank.
Load the vehicle as it would be loaded when towing a
trailer (including cargo, trailer hitch, etc.).
Weigh the vehicle to determine its GVW. Do not exceed
GVWR and GAWR.
Obtain the appropriate GCWR from the trailer towing table.
Subtract the loaded vehicle weight (GVW) from the GCWR.
This is the maximum trailer weight your vehicle can pull
given its particular GVW.
Trailer towing table
Driving
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